Fair Value Measurements (Tables)

9 Months Ended

Oct. 31, 2014

Fair Value Disclosures [Abstract]

Notional Amounts And Fair Values Of Interest Rate Swaps

As of October 31, 2014 and January 31, 2014, the notional amounts and fair values of these derivatives were as follows:

	October 31, 2014					January 31, 2014
(Amounts in millions)	Notional Amount		Fair Value			Notional Amount		Fair Value
Receive fixed-rate, pay variable-rate interest rate swaps designated as fair value hedges	$	—	$	—		$	1,000	$	5
Receive fixed-rate, pay fixed-rate cross-currency interest rate swaps designated as net investment hedges	1,250		138			1,250		97
Receive fixed-rate, pay fixed-rate cross-currency interest rate swaps designated as cash flow hedges	4,731		215			3,004		453
Receive variable-rate, pay fixed-rate interest rate swaps designated as cash flow hedges	267		(1		)	457		(2		)
Receive variable-rate, pay fixed-rate forward starting interest rate swaps designated as cash flow hedges	—		—			2,500		166
Total	$	6,248	$	352		$	8,211	$	719

Other Fair Value Disclosure [Table Text Block]

The carrying value and fair value of the Company's long-term debt as of October 31, 2014 and January 31, 2014, are as follows: 

	October 31, 2014				January 31, 2014
(Amounts in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt, including amounts due within one year	$	46,594	$	53,685	$	45,874	$	50,757